A switching locomotive

Abstract

The present application relates to the technical field of shunting locomotive, and particularly discloses a shunting locomotive, which comprises a vehicle body assembly, a roof structure and a pantograph. The vehicle body assembly comprises a chassis, a cab and a mechanical room fixed to the chassis. The horizontal side of the cab forms an outdoor corridor. The mechanical room is arranged along the front-rear direction and is spaced apart from the cab. The outdoor corridor is connected between the chassis and the mechanical room. The roof structure comprises a roof main body and a guard plate. The roof main body is installed on the top of the cab and the mechanical room. The guard plate is installed on the opposite sides of the roof main body along the left-right direction. The guard plate extends along the front-rear direction and is inclined upward on the side away from the roof main body along the left-right direction. The guard plate covers the outdoor corridor. The pantograph is installed on the roof main body. The minimum distance between the pantograph and the roof structure is greater than 500 mm. The roof structure forms an insulating layer between the vehicle body assembly and the pantograph. Thus, the problem that the shunting locomotive and the pantograph equipment are difficult to adapt to each other and the operation safety of the operating personnel is hidden is solved.

Description

Technical Field

[0001] This invention relates to the field of shunting locomotive technology, and more particularly to a shunting locomotive. Background Technology

[0002] A shunting locomotive is a railway locomotive specifically designed for shunting operations. Unlike mainline locomotives, which are responsible for hauling passenger or freight trains over long distances on major railway lines, shunting locomotives operate within marshalling yards, section yards, port stations, and large industrial and mining enterprises—"yards" with extensive railway lines—to disassemble, assemble, and move rolling stock, ensuring that trains can be correctly assembled and depart.

[0003] Traditional shunting locomotives are mostly diesel-powered, using diesel engines as the drive source. However, with increasing demands for cleaner energy, diesel engines are gradually failing to meet the standards. While electric drive is feasible, the installation and use of the pantograph and its associated high-voltage equipment generate significant current, making it unsuitable for shunting locomotives requiring outdoor operations and compromising worker safety. Furthermore, existing electric mainline locomotives are fully enclosed, eliminating the need for outdoor work conditions for personnel. Therefore, the structure of electric mainline locomotives cannot be directly copied to shunting locomotives.

[0004] Therefore, there is an urgent need for a shunting locomotive to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a shunting locomotive to solve the problem that the shunting locomotive and pantograph equipment are difficult to be compatible with each other, which poses a potential safety hazard to the operators.

[0006] On one hand, the present invention provides a shunting locomotive, the shunting locomotive comprising:

[0007] The vehicle body assembly includes a chassis and a driver's cab and a machine room fixed to the chassis. An outdoor corridor is formed on the horizontal side of the driver's cab. The machine room and the driver's cab are spaced apart in the longitudinal direction. The outdoor corridor connects the chassis and the machine room.

[0008] The roof structure includes a roof body and a protective plate. The roof body is installed on the top of the driver's cab and the machine room. The protective plate is installed on opposite sides of the roof body in the left-right direction. The protective plate extends in the front-back direction. In the left-right direction, the side of the protective plate away from the roof body is inclined upward. The protective plate covers the outdoor corridor.

[0009] A pantograph is mounted on the aforementioned roof body, and the minimum distance between the pantograph and the aforementioned roof structure is greater than 500mm. The aforementioned roof structure forms an insulating layer between the aforementioned vehicle body assembly and the aforementioned pantograph.

[0010] As a preferred technical solution for the aforementioned shunting locomotive, the aforementioned guard plate includes a first plate, a second plate, and a third plate, which are connected sequentially along the aforementioned front-rear direction.

[0011] As a preferred technical solution for the aforementioned shunting locomotive, the connection between the first plate and the second plate is labyrinthine and filled with insulating sealant, and / or the connection between the second plate and the third plate is labyrinthine and filled with insulating sealant.

[0012] As a preferred technical solution for the aforementioned shunting locomotive, the aforementioned guard plate has mounting holes located on the side of the guard plate facing away from the pantograph in the left-right direction. The connector is inserted into the mounting holes and then connected to the main body of the top cover.

[0013] As a preferred technical solution for the aforementioned shunting locomotive, steel pads are provided on both axial end faces of the aforementioned mounting holes.

[0014] As a preferred technical solution for the aforementioned shunting locomotive, the aforementioned top cover structure further includes a protective sleeve, which is fitted onto the end of the aforementioned connecting member, and the bottom of the protective sleeve is bonded and sealed to the axial end face of the aforementioned mounting hole.

[0015] As a preferred technical solution for the aforementioned shunting locomotive, a heating element is embedded in the area of ​​the top cover body where the pantograph is installed.

[0016] As a preferred technical solution for the aforementioned shunting locomotive, the heating element is a plate structure, comprising a first composite plate layer, a heating layer, a sandwich layer, and a second composite plate layer. The first composite plate layer, the heating layer, the sandwich layer, and the second composite plate layer are stacked sequentially in the vertical direction. Both the first composite plate layer and the second composite plate layer are used for insulation. The heating layer can generate heat. The sandwich layer is honeycomb-shaped and located between the heating layer and the vehicle body assembly, serving to suppress heat conduction between the heating layer and the vehicle body assembly.

[0017] As a preferred technical solution for the aforementioned shunting locomotive, the main body of the top cover is inclined, and there is a height difference between the left and right sides of the main body of the top cover, or the middle part of the main body of the top cover is higher than its left and right sides.

[0018] As a preferred technical solution for the aforementioned shunting locomotive, the main body of the top cover includes an outer skin, a peripheral frame, and transverse and longitudinal support beams. The transverse and longitudinal support beams are installed within the peripheral frame, and the outer skin is installed on the transverse and longitudinal support beams and the peripheral frame.

[0019] The shunting locomotive provided by this invention has at least the following beneficial effects:

[0020] This application provides a shunting locomotive, including a body assembly, a roof structure, and a pantograph. The body assembly includes a chassis and a driver's cab and a machine room fixed to the chassis. An outdoor corridor is formed on the horizontal side of the driver's cab. The machine room and driver's cab are spaced apart along the longitudinal direction, and the outdoor corridor connects the chassis and machine room. The roof structure includes a roof body and protective plates. The roof body is installed on the top of the driver's cab and machine room. The protective plates are installed on opposite sides of the roof body in the left-right direction, extending longitudinally. In the left-right direction, the side of the protective plate away from the roof body slopes upward, covering the outdoor corridor. The pantograph is installed on the roof body, with a minimum distance of more than 500mm between the pantograph and the roof structure. The roof structure forms an insulating layer between the body assembly and the pantograph.

[0021] For example, the main body of the top cover is used to install the pantograph and high-voltage equipment, and the top cover insulates and isolates the pantograph and high-voltage equipment from the vehicle body assembly. Protective plates are installed on the left and right sides of the top cover main body, with one end connected to the top cover main body and the other end tilted upwards. The protective plates and the top cover main body form a groove structure, semi-enclosing the pantograph and high-voltage equipment within the groove structure. The protective plates shield the area above the outdoor corridor, ensuring that users are also insulated and isolated from the pantograph and high-voltage equipment when passing through the outdoor corridor, improving user safety. Furthermore, the minimum distance between the top cover structure and the pantograph is greater than 500mm, meeting air insulation requirements. This allows the shunting locomotive to obtain electrical energy from the pantograph as its driving energy source, replacing the traditional diesel engine function, achieving clean energy. The top cover structure also allows the pantograph and high-voltage equipment to operate safely on the vehicle body assembly, adapting to the working environment without affecting the work of personnel, ensuring the safety of operators. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a shunting locomotive in an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the top cover structure in an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the top cover body in an embodiment of the present invention. Figure 1 ;

[0025] Figure 4 This is a schematic diagram of the structure of the top cover body in an embodiment of the present invention. Figure 2 ;

[0026] Figure 5 This is a partial schematic diagram of the groove in the main body of the top cover in an embodiment of the present invention;

[0027] Figure 6 This is a partial schematic diagram of the groove in the top cover structure in an embodiment of the present invention;

[0028] Figure 7 This is a partial schematic diagram of the hanging bracket of the top cover body in an embodiment of the present invention;

[0029] Figure 8 This is a schematic diagram of the protective plate in an embodiment of the present invention;

[0030] Figure 9 This is a partial enlarged view of the connection between the first plate and the second plate in an embodiment of the present invention;

[0031] Figure 10 This is a schematic diagram of the outer contour surface of the protective plate in an embodiment of the present invention;

[0032] Figure 11 This is a schematic diagram of the internal structure of the heating element in an embodiment of the present invention.

[0033] In the picture:

[0034] X: Front / backward direction; Y: Left / right direction; Z: Vertical direction;

[0035] 1. Underframe; 2. Driver's cab; 3. Machine room;

[0036] 4. Top cover structure; 41. Top cover body; 411. Outer skin; 412. Peripheral frame; 413. Horizontal and longitudinal support beams; 414. Skylight; 415. Groove; 42. Protective plate; 42a. Outer contour surface; 421. First plate; 422. Second plate; 423. Third plate; 43. Heating element; 431. First composite plate layer; 432. Heating layer; 433. Sandwich layer; 434. Second composite plate layer; 44. Hanging base; 45. Reinforcing plate. Detailed Implementation

[0037] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Furthermore, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0041] like Figures 1 to 11As shown, this application provides a shunting locomotive, including a body assembly, a roof structure 4, and a pantograph. The body assembly includes a chassis 1 and a driver's cab 2 and a machine room 3 fixed to the chassis 1. An outdoor corridor is formed on the horizontal side of the driver's cab 2. The machine room 3 is spaced apart from the driver's cab 2 along the longitudinal direction X, and the outdoor corridor connects the chassis 1 and the machine room 3. The roof structure 4 includes a roof body 41 and a protective plate 42. The roof body 41 is installed on the top of the driver's cab 2 and the machine room 3. The protective plate 42 is installed on opposite sides of the roof body 41 in the left-right direction Y. The protective plate 42 extends along the longitudinal direction X and tilts upwards on the side of the protective plate 42 away from the roof body 41, covering the outdoor corridor. The pantograph is installed on the roof body 41, with a minimum distance of more than 500 mm between the pantograph and the roof structure 4. The roof structure 4 forms an insulating layer between the body assembly and the pantograph.

[0042] For example, the top cover body 41 is used to install the pantograph and high-voltage equipment, and the top cover body 41 insulates and isolates the pantograph and high-voltage equipment from the vehicle body assembly. The protective plate 42 is installed on the left and right sides of the top cover body 41, with one end connected to the top cover body 41 and the other end tilted upwards. The protective plate 42 and the top cover body 41 form a groove structure, semi-enclosing the pantograph and high-voltage equipment within the groove structure. The protective plate 42 shields the area above the outdoor corridor, ensuring that users are also insulated and isolated from the pantograph and high-voltage equipment when passing through the outdoor corridor, improving user safety. Furthermore, the minimum distance between the top cover structure 4 and the pantograph is greater than 500mm, meeting air insulation requirements. This allows the shunting locomotive to obtain electrical energy through the pantograph as its driving energy source, replacing the traditional diesel engine function, achieving energy cleanliness. The top cover structure 4 also allows the pantograph and high-voltage equipment to operate safely on the vehicle body assembly, adapting to the working environment without affecting the work of personnel, ensuring the safety of operators.

[0043] For example, the guard plate 42 is made of fiberglass.

[0044] For example, the top cover body 41 is connected to the machine compartment 3 by threaded fasteners. The top cover body 41 has grooves 415 on its opposite edges in the left-right direction (Y). The threaded fasteners are inserted into the grooves 415, connecting the bottom wall of the grooves 415 to the top wall of the machine compartment 3. A protective plate 42 covers the top of the grooves 415. Thus, after assembly, the metal threaded fasteners are located within the grooves 415, and the protective plate 42 covers them outside the pantograph to ensure insulation performance. Furthermore, the depth of the grooves 415 is greater than the axial length of the threaded fasteners. This allows the threaded fasteners to be removed from the grooves 415 without disassembling the protective plate 42 and the top cover body 41, thereby separating the top cover structure 4 from the vehicle body assembly.

[0045] Furthermore, the area of ​​the top cover body 41 used for installing the pantograph and high-voltage equipment is coated with high-pressure sealing silicone rubber with a coating thickness of 5mm or more, and is surrounded by rubber strips for insulation.

[0046] Furthermore, the walkable areas on the smooth and flat surface of the main body 41 of the top cover are covered with anti-slip pads to ensure the safety of workers.

[0047] Optionally, the top cover body 41 is inclined, with a height difference between its left and right sides, or the middle of the top cover body 41 is higher than its left and right sides. This allows for timely drainage of water accumulated at the top.

[0048] Optionally, the guard plate 42 includes a first plate 421, a second plate 422, and a third plate 423, which are connected sequentially along the front-rear direction X.

[0049] With this configuration, the guard plate 42 adopts a split design, and the first plate 421, the second plate 422 and the third plate 423 can be produced and transported, which reduces the manufacturing difficulty of the guard plate 42 and also reduces its transportation difficulty.

[0050] Specifically, the first plate 421 is installed on the top of the driver's cab 2, and the installation point of the first plate 421 and the driver's cab 2 are located on the same plane, thus ensuring the manufacturability of the installation; the second plate 422 is installed on both sides of the pantograph in the left-right direction Y, and in the front-back direction X, the beginning and end ends of the pantograph are located between the beginning and end ends of the second plate 422.

[0051] Furthermore, to meet the driver's two-way visibility requirements, the outer contour surface 42a of the guard plate 42 has the following features: the first plate 421 is a horizontal straight line area, the second plate 422 is a curved transition area, and the third plate 423 is a vertical straight line area. By optimizing the curve parameters, the driver's visibility requirements are met.

[0052] Optionally, the connection between the first plate 421 and the second plate 422 is labyrinthine and filled with insulating sealant, and / or the connection between the second plate 422 and the third plate 423 is labyrinthine and filled with insulating sealant.

[0053] For example, one end of the first plate 421 in the length direction has an arc-shaped interface, and one end of the second plate 422 in the length direction has a corresponding arc-shaped interface. The interface of the first plate 421 and the interface of the second plate 422 are connected, and the gap between them is filled with insulating sealant.

[0054] For example, one end of the third plate 423 in the length direction has an arc-shaped interface, and the other end of the second plate 422 in the length direction has a corresponding arc-shaped interface. The interface of the third plate 423 is connected to the interface of the second plate 422, and the gap between them is filled with insulating sealant.

[0055] Optionally, the protective plate 42 has mounting holes located on the side of the protective plate 42 facing away from the pantograph in the left-right direction Y. The connector is inserted into the mounting holes and then connected to the top cover body 41.

[0056] For example, the first plate 421 has a triangular cross-section, with its bottom side fitting against the top cover body 41, its inner side facing the pantograph, and its outer side facing away from the pantograph. Mounting holes are provided on the outer side for connecting connectors. The second plate 422 has a near-triangular cross-section, allowing its mounting point to the top cover body 41 to be positioned on the outer side, thus increasing the creepage distance. The third plate 423 has a rectangular cross-section, maximizing the creepage distance while maintaining the overall shape of the shunting locomotive.

[0057] Optionally, steel washers are provided on both axial end faces of the mounting holes.

[0058] For example, the connecting parts are nuts and bolts. The structural strength of the steel washer is greater than that of the protective plate 42, and the area of ​​the steel washer is greater than that of the bolt head and nut. When the nut is tightened, the concentrated force applied by the nut / bolt head is distributed to a larger area, which significantly reduces the pressure acting on the protective plate 42, thereby effectively preventing crushing.

[0059] Optionally, the top cover structure 4 also includes a protective sleeve, which is fitted onto the end of the connector, and the bottom of the protective sleeve is bonded and sealed to the axial end face of the mounting hole.

[0060] For example, the connector includes a bolt, a washer is sandwiched between the bolt and the protective plate 42, and the sheath includes a small diameter section, a medium diameter section and a large diameter section along its axial direction. The small diameter section, medium diameter section and large diameter section are connected in sequence. The small diameter section serves as the top of the sheath and its diameter is smaller than the diameter of the nut part of the bolt. The medium diameter section is fitted onto the nut part. The large diameter section serves as the bottom of the sheath and its outer diameter is larger than the outer diameter of the washer. The bottom of the large diameter section is covered by the washer, and the outer periphery of the large diameter section is bonded and sealed to the axial end face of the mounting hole by silicone rubber adhesive to ensure gapless leakage.

[0061] Specifically, the sheath is made of methyl ethylene silicone rubber, which has high pressure resistance.

[0062] Specifically, the length of the large-diameter section should be greater than 3mm to ensure that it can cover the gasket and ensure that there is no exposed metal.

[0063] Specifically, the sheath is selected with a thickness of 4mm to meet sufficient pressure resistance requirements.

[0064] The accumulated snow forms a continuous layer on the surface of the top cover, reducing the discharge gap between the high-voltage components and the top cover, thus degrading insulation performance. To address this, a heating element 43 is embedded in the area of ​​the top cover body 41 where the pantograph is installed. By installing the heating element 43, the snow melts more quickly, thus maintaining insulation performance.

[0065] Optionally, the heating element 43 is a plate structure, which includes a first composite plate layer 431, a heating layer 432, a sandwich layer 433, and a second composite plate layer 434. The first composite plate layer 431, the heating layer 432, the sandwich layer 433, and the second composite plate layer 434 are stacked sequentially along the vertical direction Z. Both the first composite plate layer 431 and the second composite plate layer 434 are used for insulation. The heating layer 432 can generate heat. The sandwich layer 433 is honeycomb-shaped and is located between the heating layer 432 and the vehicle body assembly to suppress heat conduction between the heating layer 432 and the vehicle body assembly.

[0066] For example, the heating layer 432 is connected to the power supply system of the vehicle body assembly, and the temperature is regulated by the temperature control module so that the heating temperature is maintained within a certain range. Combined with the switch protection module, when the local temperature is detected to be too high, the power supply is automatically cut off.

[0067] For example, the sandwich layer 433 adopts a honeycomb structure, with its solid portion accounting for only a small portion of its total volume. Heat needs to be transferred along the honeycomb walls, which are thin and tortuous, resulting in an extended heat transfer length. The honeycomb walls form numerous thermal bridge "breakpoints," preventing heat from traveling as smoothly in a straight line as in a solid material. The longer and more tortuous the path, the greater the thermal resistance and the lower the efficiency of heat conduction.

[0068] Optionally, the main body 41 of the top cover includes an outer skin 411, a peripheral frame 412 and transverse and longitudinal support beams 413. The transverse and longitudinal support beams 413 are installed inside the peripheral frame 412, and the outer skin 411 is installed on the transverse and longitudinal support beams 413 and the peripheral frame 412.

[0069] Specifically, the perimeter frame 412 is constructed by splicing profiled beams and bent plates. The support beams include internally arranged square tube structures. The axial edges of the support beams are fixed to the inner sidewalls of the perimeter frame 412, forming a support in the middle of the perimeter frame 412. The outer skin 411 is arranged on the support beams and installed on the perimeter frame 412, thereby improving the structural strength of the perimeter frame 412.

[0070] Optionally, the top cover body 41 is provided with diagonal bracing beams in the area where the pantograph and high-voltage equipment are installed.

[0071] Optionally, a hanging bracket 44 is provided at each of the four corners of the top cover body 41, and a reinforcing plate 45 is provided at the bottom of the hanging bracket 44. The four hanging brackets 44 are symmetrical about the center line of the length direction of the top cover body 41.

[0072] Optionally, the roof body 41 is equipped with an operable skylight 414 to allow personnel to work on the roof. Handrails and safety ropes are provided to ensure personnel safety during operation.

[0073] Sufficient maintenance space is reserved at the top for components requiring repair. High-voltage cables can be inspected via the left-hand passage; continuing past the high-voltage cable terminal and pantograph duct, along the edge of the pantograph and past its corner, the pantograph can be inspected; the roof-mounted surge arrester can be inspected via the right-hand passage, crossing the pantograph duct. Continuing forward, the air conditioner, horn, and headlights on the roof of the adjacent driver's cab 2 can be inspected.

[0074] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A shunting locomotive, characterized in that, include: The vehicle body assembly includes a chassis (1) and a driver's cab (2) and a machine room (3) fixed to the chassis (1). The horizontal side of the driver's cab (2) forms an outdoor corridor. The machine room (3) and the driver's cab (2) are spaced apart along the front-rear direction (X). The outdoor corridor connects the driver's cab (2) and the machine room (3). The top cover structure (4) includes a top cover body (41) and a protective plate (42). The top cover body (41) is installed on the top of the driver's cab (2) and the machine room (3). The protective plate (42) is installed on the opposite sides of the top cover body (41) in the left-right direction (Y). The protective plate (42) extends along the front-back direction (X) and in the left-right direction (Y). The side of the protective plate (42) away from the top cover body (41) is inclined upward. The protective plate (42) covers the outdoor corridor. A pantograph is installed on the main body of the top cover (41), the minimum distance between the pantograph and the top cover structure (4) is greater than 500mm, and the top cover structure (4) forms an insulating layer between the vehicle body assembly and the pantograph; The protective plate (42) includes a first plate (421), a second plate (422), and a third plate (423), which are connected sequentially along the front-rear direction (X); the connection between the first plate (421) and the second plate (422) is labyrinth-shaped and filled with insulating sealant, and / or the connection between the second plate (422) and the third plate (423) is labyrinth-shaped and filled with insulating sealant; The top cover body (41) has a heating element (43) embedded in the area where the pantograph is installed. The heating element (43) is a plate structure. The heating element (43) includes a first composite plate layer (431), a heating layer (432), a sandwich layer (433), and a second composite plate layer (434). The first composite plate layer (431), the heating layer (432), the sandwich layer (433), and the second composite plate layer (434) are stacked sequentially in the vertical direction (Z). The first composite plate layer (431) and the second composite plate layer (434) are used for insulation. The heating layer (432) can generate heat. The sandwich layer (433) is honeycomb-shaped and is located between the heating layer (432) and the vehicle body assembly to suppress heat conduction between the heating layer (432) and the vehicle body assembly.

2. The shunting locomotive according to claim 1, characterized in that, The protective plate (42) has a mounting hole located on the side of the protective plate (42) facing away from the pantograph in the left-right direction (Y). The connector is inserted into the mounting hole and then connected to the top cover body (41).

3. The shunting locomotive according to claim 2, characterized in that, Steel pads are provided on both axial end faces of the mounting holes.

4. The shunting locomotive according to claim 2, characterized in that, The top cover structure (4) also includes a protective sleeve, which is fitted onto the end of the connector, and the bottom of the protective sleeve is bonded and sealed to the axial end face of the mounting hole.

5. The shunting locomotive according to claim 1, characterized in that, The top cover body (41) is inclined, and there is a height difference between the left and right sides of the top cover body (41), or the middle part of the top cover body (41) is higher than its left and right sides.

6. The shunting locomotive according to claim 1, characterized in that, The main body of the top cover (41) includes an outer skin (411), a peripheral frame (412), and horizontal and vertical support beams (413). The horizontal and vertical support beams (413) are installed inside the peripheral frame (412), and the outer skin (411) is installed on the horizontal and vertical support beams (413) and the peripheral frame (412).

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